I was in a similar dilemna earlier this year with a broken neck on my Behr and almost went for the Nissens. But after doing some more research, it seems that the Nissens have a reputation for leaking at the crimps. So, I wound up getting a all-aluminum Mishimoto rad from www.radiator.com
for just over $400. Their local shop is 1960 Ellesmere #8 and their # is 416-431-9651. However, be warned that these Mishimoto's are NOT a simple bolt-on. The shroud does not line up properly, so I had to trim almost 1/2" off the aluminum brackets to align everything. Once aligned, it's far superior to a Behr, and cheaper than a $800 Fluidyne all-aluminum.